Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751454AbbH3GUP (ORCPT ); Sun, 30 Aug 2015 02:20:15 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:34582 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751117AbbH3GUN (ORCPT ); Sun, 30 Aug 2015 02:20:13 -0400 From: yalin wang To: catalin.marinas@arm.com, will.deacon@arm.com, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, ard.biesheuvel@linaro.org, minchan@kernel.org, fkan@apm.com, steve.capper@linaro.org, lauraa@codeaurora.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: yalin wang Subject: [PATCH] arm64: add kc_offset_to_vaddr and kc_vaddr_to_offset macro Date: Sun, 30 Aug 2015 14:19:59 +0800 Message-Id: <1440915599-18485-1-git-send-email-yalin.wang2010@gmail.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1152 Lines: 31 This patch add kc_offset_to_vaddr() and kc_vaddr_to_offset(), the default version doesn't work on arm64, because arm64 kernel address is below the PAGE_OFFSET, like module address and vmemmap address are all below PAGE_OFFSET address. Signed-off-by: yalin wang --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index d374191..ef1ed5c 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -660,6 +660,8 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, #define update_mmu_cache_pmd(vma, address, pmd) do { } while (0) +#define kc_vaddr_to_offset(v) ((v) & ((1UL << VA_BITS) - 1)) +#define kc_offset_to_vaddr(o) ((o) | ~((1UL << VA_BITS) - 1)) #endif /* !__ASSEMBLY__ */ #endif /* __ASM_PGTABLE_H */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/